Hyundai I30 2008 Wheel size. Wheel size for the 2008 Hyundai i30 will vary depending on model chosen, although keep in mind that many manufacturers offer alternate wheel sizes as options on many models.The wheel size available will alter the range of tyres available to be fitted. Standard wheel sizes on the Hyundai i30 vary from 15x5.5 inches Highway: 55 mpg US (4.3 L/100Km) Combined: 50 mpg US (4.7 L/100Km) CO2 Emissions: 154 g/km. report a mistake on this page. HYUNDAI i30 Estate 2008-2012 pecs, photos, engines, years, launch date AfYLQr.